42 ECONOMIC GEOLOGY, 
ence of cupreous boulders on a similar south slope led to a search for their source, and 
the vein was discovered quite near at hand, and proved to be richer than any others in 
the district. 
Paddock Company. This is the largest of all the copper companies, embracing 
partly in fee simple the entire land and partly the mineral rights upon four of the orig- 
inal lots of the town of Lyman, and therefore supposed to contain 1200 acres. The 
course of the veins is more than three miles in length, reaching from the Titus farm 
upon the south to an unoccupied tract called on our map the Penhallow lot. J. H. 
Paddock, Esq., of St. Johnsbury, Vt., is the principal proprietor, and the manager of 
the mine and mill. He has brought together several of the tracts known ten years ago 
as the Oro, Osgood, Osborn, New Hampshire Silver Lead Co., etc. What were form- 
erly the Oro and Osgood openings are now the No. 1 and No. 2 shafts of the Paddock 
mine. Concerning these two mines, I wrote as follows in 1869: 
‘¢The next is called the Osgood mine, embracing about 700 acres of the land on the 
east slope of Gardner’s mountain. I examined four or five openings. The first, near 
the south line, was ten feet deep, exhibiting five feet width of copper schists. The 
second shows a width of ten feet of copper schists. The third is a shaft thirty-five 
feet deep. Eighty feet below is a short tunnel eighty feet long, and designed to cut 
the vein. A large pile of good specimens of this copper may be seen near the shaft. 
«¢ The next north is the Oro mine. Here is a shaft sixty-five feet deep, a shaft 
house, easily seen from a great distance on account of its conspicuous position, two 
drifts fourteen and sixteen feet long, and a vein from four to seven feet wide, carrying 
more ore near the hanging than the foot wall. Sixty tons, part yielding 10.80, and 
part 9. per cent. of copper, have been shipped from the mine to Boston. There are 
one hundred and seventy-five acres of land connected with this property, and the vein 
is eighty-eight rods long.” 
I have visited the No. 1 shaft several times during the past nine years, watching with 
interest the progress indicated. Work has not been done continuously. It may be suffi- 
cient to mention the present [April, 1878] aspect of the excavation. All the laborers 
have been transferred to the No. 1 shaft for the purpose of developing that one more 
rapidly than if two were being exploited at the same time. Seven miners are at work 
under the superintendence of Capt. Francis Bennett, recently of the copper mines about 
Lenoxville, P. Q. The depth of the shaft is 170 feet. It follows the vein very nearly 
in its course. Extensive levels are situated at ten and twenty fathoms depth. Ore 
has been taken from one or both of these for a distance of 80 feet lengthwise of the 
vein. It has been proved that the vein is continuous for the distance of 80 feet, 
though not perfectly straight. There are two well-marked bendings exhibited, the 
arc of the curve pointing easterly, and these were seen to correspond with eastward 
thrusts of a dolomite band at the surface. These irregularities recall the similar varied 
courses of the auriferous conglomerate in the east part of the town (see map, page 296, 
Vol. II), though much less extensive. Without doubt the careful exploitation of 
Gardner’s mountain in years to come will reveal bends and fractures corresponding 
